مَرْكَزٌ

A place where a spear or other thing is stuck, or fixed, into the ground, upright: (TA:) a place of firmness, or fixedness. (Msb.)

(tropical:) The place of a man; his place of alighting or abiding. (S, K.)

(tropical:) The station of an army, or of a body of troops or soldiers, to which its occupants are commanded to keep. (K, TA.) You say, هٰذَا مَرْكَزُ الخَيْلِ (tropical:) [This is the fixed station of the cavalry]. (A.) Pl. مَرَاكِزُ. (A.)

The centre of a circle. (S, K.)

↓ رَكِيزَةٌ signifies the same as مَرْكَزٌ [but in what sense I do not find pointed out]. (TA.)